6305, 6305-2Z, 6305-2RS Ball Bearing, ISO 15

For a 25 mm shaft and a 62 mm housing bore, the 6305 ball bearing (ISO 15) is 17 mm wide. Modeled as simplified STEP files.

How these parts are made, and what the levels mean: read the method

• Also searched as: 6305 bearing, 6305-2Z bearing, 6305-2RS bearing
• Model id: iso15-6305
• Standard: ISO 15 · size 6305

Versions

Designation	What differs	Part key	Simplified
6305	open	iso15-6305	STEP
6305-2Z	2Z (shielded)	iso15-6305-2z	STEP
6305-2RS	2RS (sealed)	iso15-6305-2rs	STEP

Dimensions

Symbol	Name	min	nom	max	Modeled	Rule	Level
d	Bore diameter		25		25	nominal	L1
D	Outside diameter		62		62	nominal	L1
B	Width		17		17	nominal	L1
r	Chamfer dimension	1.1			1.1	single limit (min), modeled at the limit	L1

Drawing

As a PDF: CC-ISO15-SZ-6305.pdf.

Load ratings and speeds

What NSK's web catalogue (nsk-dgbb) lists for its open bearing of this designation. Limiting speeds are for the open bearing; a shielded or sealed bearing has its own, lower ones.

• Basic Load Ratings, Cr: 22600 N
• Basic Load Ratings, C0r: 11200 N
• Limiting Speeds, Grease: 13000 min-1
• Limiting Speeds, Oil (Oil-bath): 16000 min-1

The 6305 ball bearing beside the 6205 and the 60/28

The 6305 is number 62 of the 71 ISO 15 ball bearings published here, listed from 693 to 6306.

• Bore diameter (d): 25 mm on the 6305 ball bearing, against 25 mm on the 6205 and 28 mm on the 60/28.
• Outside diameter (D): 62 mm on the 6305 ball bearing, against 52 mm on the 6205 and 52 mm on the 60/28.
• Width (B): 17 mm on the 6305 ball bearing, against 15 mm on the 6205 and 12 mm on the 60/28.
• Chamfer dimension (r): at least 1.1 mm on the 6305 ball bearing, against at least 1 mm on the 6205 and at least 0.6 mm on the 60/28.

Other sizes

• One size smaller: 6205 Ball Bearing, ISO 15, 25 mm bore, 52 mm OD, 15 mm wide.
• One size larger: 60/28 Ball Bearing, ISO 15, 28 mm bore, 52 mm OD, 12 mm wide.

Documents

• CC-ISO15-DS-6305.pdf: 6305 datasheet: values with levels, sources
• CC-ISO15-SZ-6305.pdf: 6305 drawing: this size's values on the views
• parts.json: the part record of this size (the platform contract)

Sources

nsk-dgbb, ntn-bearingfinder-dgbb, skf-17000-dgbb. Full citations: the method page and this size's datasheet.

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